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Celsius to Kelvin Converter
Convert Celsius to Kelvin and back, instantly.
Result
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Converted value.
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| Formula | — |
| Reverse | — |
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How the Celsius to Kelvin Converter Works
Converting °C to K isn’t a simple multiplication because the scales start at different points. The Kelvin scale starts at absolute zero and uses the same size degree as Celsius, so you just add 273.15; water freezes at 273.15 K and room temperature 25°C is 298.15 K.
Type a value and pick the direction — the converter handles both ways instantly.
K = °C + 273.15
Frequently Asked Questions
What is 25°C in Kelvin?
298.15 K.
How do you convert Celsius to Kelvin?
Add 273.15 to the Celsius value.
What is absolute zero?
0 Kelvin, or −273.15°C — the coldest possible temperature.
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